Distances to eight nearby isolated low-luminosity galaxies

被引:0
|
作者
Sharina, ME [1 ]
Karachentsev, ID [1 ]
Tikhonov, NA [1 ]
机构
[1] Russian Acad Sci, Special Astrophys Observ, Stavropolskii Krai 357147, Russia
来源
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS | 1999年 / 25卷 / 05期
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中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Eight isolated dwarf galaxies with radial velocities between 350 and 500 km s(-1) have been resolved into stars for the first time. Based on photometry of the brightest blue and red stars, we obtained the following distance estimates (in Mpc) for these galaxies: 6.5 (UGC 2684), 6.9 (NGC 2537), 6.8 (UGC 5288), 5.3 (UGC 5423), 6.2 (UGC 5672), 7.4 (UGC 5918), 5.4 (NGC 5023), and 5.1 (NGC 5229). A wide variety of morphological features is noted in the isolated galaxies under consideration, which is clearly attributable to a difference in their star-formation activity. The median value of individual estimates of the Hubble parameter H = V-0/D for these galaxies is 68 km s(-1) Mpc(-1).
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页码:322 / 331
页数:10
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